CN114552839A - High-performance brushless motor - Google Patents
High-performance brushless motor Download PDFInfo
- Publication number
- CN114552839A CN114552839A CN202210098705.6A CN202210098705A CN114552839A CN 114552839 A CN114552839 A CN 114552839A CN 202210098705 A CN202210098705 A CN 202210098705A CN 114552839 A CN114552839 A CN 114552839A
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- China
- Prior art keywords
- rear end
- fixed
- rotor shaft
- stator winding
- end cover
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- 238000004804 winding Methods 0.000 claims abstract description 86
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000006698 induction Effects 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Abstract
The invention relates to a high-performance brushless motor, which belongs to the technical field of motors and comprises a machine shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixed at two ends of the machine shell, a rotor assembly and a stator assembly positioned at the outer side of the rotor assembly are arranged in the machine shell, the rotor assembly comprises a rotor shaft and magnetic steel fixed on the rotor shaft, the stator assembly comprises a stator core and a stator winding positioned at the inner side of the stator core, an annular space is formed between an outer ring of the magnetic steel and an inner ring of the stator core, the stator winding is positioned in the annular space, and a wire outlet end of the stator winding is fixedly connected with a connecting part fixed at the inner end of the rear end cover. The invention has the advantages that the outer diameter of the stator winding can be closer to the inner diameter of the stator core, the adjustment range of the coil can be enlarged, the coil is convenient to disassemble and assemble, the adjustable range of the motor performance can be enlarged, the performance of the motor can be improved, the winding process requirement can be reduced, and the like.
Description
Technical Field
The invention relates to a high-performance brushless motor, and belongs to the technical field of motors.
Background
A brushless dc motor is widely used in various fields as a small-sized high-efficiency motor. Because the internal size of the motor has a fixed value after the power of the motor is set, how to save the internal space of the motor, make full use of the space of the whole motor, and ensure the high performance of the motor on the premise of not changing the power of the motor is still a technical problem which needs to be solved urgently. At present, stator winding in the motor is fixed at stator core's inner circle through the glue bonding, consequently, need be full of glue at the contact surface between stator core and the stator winding during the assembly, make to have certain clearance between stator core and the stator winding after the assembly, the inner space of partly motor has been occupied, thereby stator winding's size has been restricted, make the scope of coil adjustment and the adjustable scope of motor performance all reduce, lead to the performance of motor to receive the influence, and the space reduces still can make wire-wound technological requirement become higher.
Disclosure of Invention
The invention aims to provide a high-performance brushless motor, which solves the problems that in the prior art, a certain gap exists between an assembled stator core and a stator winding, and part of the internal space of the motor is occupied, so that the size of the stator winding is limited, the adjustment range of a coil and the adjustable range of the motor performance are reduced, the performance of the motor is influenced, the space is reduced, the winding process requirement is higher, and the like.
The technical purpose of the invention is mainly solved by the following technical scheme: the utility model provides a high performance brushless motor, includes the casing and is fixed in the front end housing and the rear end cap at casing both ends, be equipped with the stator assembly of rotor assembly in the casing and being located its outside, the rotor assembly includes the rotor shaft and is fixed in the epaxial magnet steel of rotor, the stator assembly is including being fixed in the stator core of casing inner wall and the stator winding that is located its inboard, the magnet steel outer lane with be formed with annular space between the stator core inner circle, the stator winding is located in the annular space and its leading-out terminal with be fixed in the inner connecting portion of rear end cap form fixed connection.
The device of the invention forms fixed connection between the wire outlet end of the stator winding and the connecting part of the inner end of the rear end cover, so that the outer diameter of the stator winding can be closer to the inner diameter of the stator core until the outer ring of the stator winding is attached to the inner ring of the stator core, the space utilization rate of the annular space is higher, more coils can be wound in the stator winding under the condition of certain internal size of the motor, the adjustment range of the coils can be enlarged, meanwhile, the adjustable range of the performance of the motor can be enlarged, the performance of the motor can be improved, and the process requirement of winding can be reduced.
Preferably, the connecting portion comprises a circular connecting sleeve concentrically fixed at the inner end of the rear end cover, the connecting sleeve faces one end of the stator winding and is provided with an opening at the end and a circular connecting groove, and the wire outlet end of the stator winding extends into the connecting groove and is fixed with the connecting groove through glue.
The connecting sleeve is concentrically fixed at the inner end of the rear end cover body and is in a circular ring shape, one end of the connecting sleeve, facing the stator winding, is provided with the end opening and is in a circular ring-shaped connecting groove, the wire outlet end of the stator winding extends into the connecting groove and is fixed with the connecting groove through glue, so that the wire outlet end of the stator winding can be bonded and fixed with the inner wall of the connecting groove through the glue, the wire outlet end of the stator winding only needs to extend into the connecting groove firstly during assembly, then the glue is injected into the connecting groove, the connection and the fixation between the connecting parts of the stator winding and the inner end of the rear end cover can be realized after the glue is solidified, the assembly process is simple, convenient and easy to control, the installation and disassembly are convenient, meanwhile, the assembly with other parts of the motor is convenient, and in addition, the better installation and the wire end of the stator winding can be fixed.
Preferably, the inner diameter of the connecting groove is matched with the inner diameter of the stator winding, and the outer diameter of the connecting groove is larger than the outer diameter of the stator winding.
Through the internal diameter with the spread groove set up to the internal diameter looks adaptation with stator winding, the external diameter of spread groove is greater than stator winding's external diameter, make stator winding's leading-out terminal stretch into in the spread groove and pass through glue and fixed back rather than, the contact ratio of stator winding axis and spread groove axis is higher, thereby make stator winding axis and stator core, the contact ratio of magnet steel axis is higher, so that guarantee stator winding's performance, in addition make stator winding's leading-out terminal stretch into in the spread groove back and spread groove outer lane between still have certain clearance, so that glue fills this clearance and fixes, make the size that stator winding can not be restricted to the outer lane of spread groove simultaneously, so that stator winding's external diameter can be more close stator core's internal diameter.
Preferably, the connecting sleeve is made of plastic, and the front end cover and the rear end cover are both made of aluminum.
Through setting up the adapter sleeve into being made by plastics, front end housing and rear end cap all make aluminium for stator winding can not with rear end cap direct contact, can prevent to puncture, and the size precision of metal material's front end housing and rear end cap guarantees more easily, so that realize the centering of rotor shaft and front end housing, rear end cap.
As preferred, the rear end cap outer end is fixed with inside cavity and inner open-ended housing, the hole that the rotor spindle rear end passed adapter sleeve and rear end cap in proper order extends to in the housing and be fixed with the response magnetic ring through the axle sleeve, the axle sleeve movable sleeve is located on the rotor spindle, response magnetic ring tight fit is fixed in on the axle sleeve, the rotor spindle is located part in the housing is formed with the first step face of indent, the axial inner of axle sleeve with first step face butt, fastening screw is worn to be equipped with along its axial screw thread in the rotor spindle rear end, fastening screw's head inner with the axial outer end butt of axle sleeve.
The rear end of the rotor shaft sequentially passes through the connecting sleeve and the inner hole of the rear end cover to extend into the cover, the induction magnetic ring is fixed on the rotor shaft through the shaft sleeve, the shaft sleeve is movably sleeved on the rotor shaft, the induction magnetic ring is tightly fixed on the shaft sleeve, the part of the rotor shaft, which is positioned in the cover, is provided with a concave first step surface, the axial inner end of the shaft sleeve is abutted against the first step surface, the rear end of the rotor shaft is penetrated with a fastening screw along the axial thread, the head inner end of the fastening screw is abutted against the axial outer end of the shaft sleeve, so that the first step surface and the head inner end of the fastening screw can limit the axial two ends of the shaft sleeve to fix the shaft sleeve, the induction magnetic ring can be fixed on the rotor shaft through the shaft sleeve, and can be separated from the axial outer end of the shaft sleeve when the fastening screw is unscrewed to loosen the fixing effect on the shaft sleeve, the shaft sleeve can rotate along the rotor shaft, so that the orientation of the induction magnetic ring can be adjusted, and the magnetic pole direction of the induction magnetic ring can be adjusted.
Preferably, a distance between the first step surface and the rear end of the rotor shaft is smaller than an axial length of the sleeve.
The distance between the first step surface and the rear end of the rotor shaft is set to be smaller than the axial length of the shaft sleeve, so that the inner end of the head of the fastening screw can be abutted against the outer axial end of the shaft sleeve, and the limiting fixation of the shaft sleeve is realized.
Preferably, a fourth step surface which is abutted against the outer end of the induction magnetic ring and protrudes outwards is formed on one side of the axial outer end of the shaft sleeve.
Through the fourth step face that is formed with the outer end butt of response magnetic ring and evagination on one side of the axial outer end at the axle sleeve for the fourth step face can carry on spacingly, the assembly of being convenient for to the response magnetic ring when will responding to the magnetic ring tight fit on the axle sleeve.
Preferably, a hall plate located on the outer side of the induction magnetic ring is fixed at the outer end of the rear end cover, wire outlet holes through which lead wires of the stator winding pass are formed between the stator winding and the hall plate so that the lead wires of the stator winding are connected with the hall plate, the wire outlet holes extend from the groove bottom of the connecting groove to the outer end of the rear end cover, and the number of the wire outlet holes is three and the wire outlet holes are distributed in a circular array.
The Hall plate located outside the induction magnetic ring is fixed at the outer end of the rear end cover, wire holes for leading wires of the stator winding to pass are formed between the stator winding and the Hall plate, so that the leading wires of the stator winding are connected with the Hall plate, the wire holes extend to the outer end of the rear end cover from the groove bottom of the connecting groove, the number of the wire holes is three, and the wire holes are distributed in a circular array mode, the leading wires of the wire ends of the stator winding can directly enter the cover through the wire holes to be connected with the Hall plate, wiring is convenient, the wire outlet position does not need to be increased with a mechanical structure for protection, the internal structure of the motor is simplified, and in addition, the convenient switching of triangular connection and star connection can be carried out after the leading wires of the stator winding are connected into the Hall plate.
Preferably, bearings for rotatably supporting the rotor shaft are fixed in the front end cover and the rear end cover respectively, the front end and the rear end of the rotor shaft penetrate through corresponding inner holes of the bearings respectively and form fixed connection with the inner holes, the bearing in the rear end cover is located on one side of the outer end of the bearing and located on the outer side of the connecting sleeve, a second step surface which abuts against and is concave towards the inner end of the bearing in the front end cover is formed on the rotor shaft, a third step surface which is located towards the inner side and is concave towards the inner side of the bearing in the rear end cover is further formed on the rotor shaft, a spring which is located between the third step surface and the bearing in the rear end cover is sleeved on the rotor shaft, and the two ends of the spring abut against the third step surface and the inner axial end of the bearing respectively.
The front end cover and the rear end cover are respectively fixed with a bearing for rotatably supporting the rotor shaft, the front end and the rear end of the rotor shaft respectively penetrate through the inner holes of the corresponding bearings and are fixedly connected with the inner holes, the bearing in the rear end cover is positioned on one side of the outer end of the rotor shaft and is positioned on the outer side of the connecting sleeve, the rotor shaft is provided with a second step surface which is abutted against and recessed inwards from the axial inner end of the bearing in the front end cover, the rotor shaft is also provided with a third step surface which is positioned on the inner side of the bearing in the rear end cover and is recessed inwards, the rotor shaft is sleeved with a spring positioned between the third step surface and the bearing in the rear end cover, two ends of the spring are respectively abutted against the third step surface and the axial inner end of the bearing, so that the distance between the bearing in the rear end cover and the magnetic steel can be increased through the connecting sleeve, the risk of the bearing influenced by too strong magnetism of the magnetic steel can be reduced, the smooth operation of the motor can be ensured, and two ends of the rotor shaft can be blocked by the two bearings at the same time, the axial to the rotor shaft is spacing in order to realize to carry on spacingly through the mode of one end rigidity butt one end elasticity butt, the precision is higher, and spacing effect is better, can effectively prevent the rotor shaft and take place the axial float when moving.
Preferably, two balance blocks respectively located at two sides of the magnetic steel in the axial direction are fixed on the rotor shaft.
The two balance blocks respectively positioned at the two sides of the magnetic steel in the axial direction are fixed on the rotor shaft, so that the balance space can be increased, the rotor shaft can keep balance to the greatest extent in the operation process, and the operation stability of the motor is improved.
Therefore, the invention has the advantages that the outer diameter of the stator winding can be closer to the inner diameter of the stator core until the outer ring of the stator winding is attached to the inner ring of the stator core, the space utilization rate of the annular space is larger, more coils can be wound in the stator winding under the condition of a certain internal size of the motor, the adjustment range of the coils can be enlarged, the coils are convenient to disassemble and assemble, meanwhile, the adjustable range of the performance of the motor can be enlarged, the performance of the motor can be improved, the winding process requirement can be reduced, and the like.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional structural view of the present invention;
fig. 3 is an enlarged view of the structure at a in fig. 2 according to the present invention.
The scores in the figures are as follows: 1. a housing; 2. a front end cover; 3. a rear end cap; 4. a rotor assembly; 5. a stator assembly; 6. a rotor shaft; 7. magnetic steel; 8. a stator core; 9. a stator winding; 10. an annular space; 11. a connecting portion; 12. connecting sleeves; 13. connecting grooves; 14. a cover; 15. a shaft sleeve; 16. an induction magnetic ring; 17. a first step surface; 18. fastening screws; 19. a fourth step surface; 20. a Hall plate; 21. a wire outlet hole; 22. a bearing; 23. a second step surface; 24. a third step surface; 25. a spring; 26. a balance weight.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
As shown in figure 1, the high-performance brushless motor of the invention comprises a machine shell 1, a front end cover 2 and a rear end cover 3 fixed at two ends of the machine shell 1, the front end cover 2 and the rear end cover 3 are connected and fixed through screws, the front end cover 2 and the rear end cover 3 are both made of aluminum, a rotor assembly 4 and a stator assembly 5 positioned at the outer side of the rotor assembly are arranged in the machine shell 1, the rotor assembly 4 comprises a rotor shaft 6 and magnetic steel 7 fixed on the rotor shaft 6, two balance blocks 26 respectively positioned at two sides of the magnetic steel 7 in the axial direction are fixed on the rotor shaft 6, the stator assembly 5 comprises a stator core 8 fixed on the inner wall of the machine shell 1 and a stator winding 9 positioned at the inner side of the stator core, a gap is formed between the inner ring of the stator winding 9 and the outer ring of the magnetic steel 7, the outer ring of the stator winding 9 is attached to the inner ring of the stator core 8 in an insulating way, an annular space 10 is formed between the outer ring of the magnetic steel 7 and the inner ring of the stator core 8, stator winding 9 is located annular space 10 and its leading-out terminal forms fixed connection with the connecting portion 11 that is fixed in rear end housing 3 inner, stator winding 9's non-leading-out terminal is located annular space 10, connecting portion 11 is including being fixed in rear end housing 3 inner and being annular adapter sleeve 12 with one heart, adapter sleeve 12 is made by plastics, adapter sleeve 12 is formed with this end opening and is annular spread groove 13 towards the one end of stator winding 9, stator winding 9's leading-out terminal stretches into in spread groove 13 and passes through glue fixed rather than, the internal diameter of spread groove 13 and the internal diameter looks adaptation of stator winding 9, the external diameter of spread groove 13 is greater than the external diameter of stator winding 9, the external diameter of spread groove 13 is greater than the internal diameter of stator core 8.
As shown in fig. 2 and fig. 3, a cover 14 with a hollow interior and an open inner end is fixed at the outer end of the rear end cover 3, the cover 14 and the rear end cover 3 are fixed in a tight fit manner, the rear end of the rotor shaft 6 sequentially passes through the inner holes of the connecting sleeve 12 and the rear end cover 3 to extend into the cover 14 and is fixed with an induction magnetic ring 16 through a shaft sleeve 15, the shaft sleeve 15 is movably sleeved on the rotor shaft 6, the induction magnetic ring 16 is tightly fixed on the shaft sleeve 15, a fourth step surface 19 which is abutted against the outer end of the induction magnetic ring 16 and is protruded outwards is formed at one side of the axial outer end of the shaft sleeve 15, the fourth step surface 19 is an annular end surface, a concave first step surface 17 is formed at the part of the rotor shaft 6 located in the cover 14, the first step surface 17 is an annular end surface, the axial inner end of the shaft sleeve 15 is abutted against the first step surface 17, the distance between the first step surface 17 and the rear end of the rotor shaft 6 is smaller than the axial length of the shaft sleeve 15, a fastening screw 18 is inserted along the axial thread of the rear end of the rotor shaft 6, the inner end of the head of the fastening screw 18 is abutted against the axial outer end of the shaft sleeve 15, the outer end of the rear end cover 3 is fixedly provided with a Hall plate 20 positioned on the outer side of the induction magnetic ring 16, the Hall plate 20 is fixed on the outer end of the rear end cover 3 through a stud, a wire outlet 21 for leading wires of the stator winding 9 to pass through is arranged between the stator winding 9 and the Hall plate 20 so that the leading wires of the stator winding 9 are connected with the Hall plate 20, the wire outlet 21 extends from the bottom of the connecting groove 13 to the outer end of the rear end cover 3, and the number of the wire outlet 21 is three and is distributed in a circular array.
As shown in fig. 2, bearings 22 for rotatably supporting the rotor shaft 6 are respectively fixed in the front end cover 2 and the rear end cover 3, the bearings 22 are fixed with the front end cover 2 and the rear end cover 3 in a tight fit manner, the front end and the rear end of the rotor shaft 6 respectively penetrate through the inner holes of the corresponding bearings 22 and are fixedly connected with the inner holes, the rotor shaft 6 is fixed with the inner holes of the bearings 22 in a transition fit manner, a second step surface 23 which is abutted against and recessed from the axial inner end of the bearing 22 in the front end cover 2 is formed on the rotor shaft 6, the second step surface 23 is an annular end surface, a third step surface 24 which is positioned on the axial inner side of the bearing 22 in the rear end cover 3 and is recessed is also formed on the rotor shaft 6, the third step surface 24 is an annular end surface, a spring 25 which is positioned between the third step surface 24 and the bearing 22 in the rear end cover 3 is sleeved on the rotor shaft 6, and two ends of the spring 25 are respectively connected with the third step surface 24, The axially inner ends of the bearings 22 abut.
In the specific implementation of the embodiment, during assembly, the wire outlet end of the stator winding 9 extends into the connecting groove 13 until the wire outlet end of the stator winding 9 contacts with the bottom of the connecting groove 13, and the lead of the stator winding 9 passes through the wire outlet hole 21, and then glue is injected into the connecting groove 13, after the glue is solidified, the stator winding 9 can be connected and fixed with the inner end connecting part 11 of the rear end cover 3, after the fixing, the rear end cover 3 is assembled at the rear end of the casing 1, and the stator winding 9 extends into the annular space 10, so that the fixed installation of the stator winding 9 can be completed, the outer diameter of the assembled stator winding 9 can be closer to the inner diameter of the stator core 8 until the outer ring of the stator winding 9 is attached to the inner ring of the stator core 8, so that the space utilization rate of the annular space 10 is greater, and more coils can be wound in the stator winding 9 under the condition that the inner size of the motor is constant, can increase the scope of coil adjustment, motor performance adjustable scope also can increase simultaneously, thereby can improve the performance of motor, and can reduce wire-wound technological requirement, the tight-fitting power through two bearings 22 and front end housing 2, rear end housing 3 can block the both ends of rotor shaft 6 in addition, and carry on spacingly through the mode of one end rigidity butt one end elasticity butt, with the realization spacing to the axial of rotor shaft 6.
The invention has the advantages that the outer diameter of the stator winding can be closer to the inner diameter of the stator core until the outer ring of the stator winding is attached to the inner ring of the stator core, so that the space utilization rate of the annular space is larger, more coils can be wound in the stator winding under the condition of a certain size of the interior of the motor, the adjustment range of the coils can be enlarged, the coils can be conveniently detached and assembled, meanwhile, the adjustable range of the performance of the motor can be enlarged, the performance of the motor can be improved, the winding process requirement can be reduced, and the like.
Claims (10)
1. A high performance brushless motor characterized by: including casing (1) and being fixed in front end housing (2) and rear end cap (3) at casing (1) both ends, be equipped with rotor assembly (4) in casing (1) and be located stator assembly (5) in its outside, rotor assembly (4) include rotor shaft (6) and be fixed in magnet steel (7) on rotor shaft (6), stator assembly (5) are including being fixed in stator core (8) of casing (1) inner wall and being located its inboard stator winding (9), magnet steel (7) outer lane with be formed with annular space (10) between stator core (8) inner circle, stator winding (9) are located in annular space (10) and its leading-out terminal with be fixed in rear end cap (3) inner connecting portion (11) form fixed connection.
2. The high performance brushless electric machine of claim 1, wherein: connecting portion (11) are fixed in including concentric rear end cover (3) the inner and be the annular adapter sleeve (12) of circle, adapter sleeve (12) orientation the one end of stator winding (9) is formed with this end opening and is annular spread groove (13) of circle, the leading-out terminal of stator winding (9) stretches into extremely it is fixed through glue in spread groove (13) and rather than.
3. The high performance brushless electric machine of claim 2, wherein: the inner diameter of the connecting groove (13) is matched with the inner diameter of the stator winding (9), and the outer diameter of the connecting groove (13) is larger than that of the stator winding (9).
4. The high performance brushless electric machine of claim 2 or 3, wherein: the connecting sleeve (12) is made of plastic, and the front end cover (2) and the rear end cover (3) are both made of aluminum.
5. The high performance brushless electric machine of claim 1, 2 or 3, wherein: rear end cap (3) outer end is fixed with inside cavity and inner open-ended housing (14), the hole that rotor shaft (6) rear end passed adapter sleeve (12) and rear end cap (3) in proper order extends to be fixed with response magnetic ring (16) in housing (14) and through axle sleeve (15), axle sleeve (15) movable sleeve is located on rotor shaft (6), response magnetic ring (16) tight fit is fixed in on axle sleeve (15), rotor shaft (6) are located part in housing (14) is formed with the first step face (17) of indent, the axial inner of axle sleeve (15) with first step face (17) butt, rotor shaft (6) rear end is worn to be equipped with fastening screw (18) along its axial screw thread, the head inner of fastening screw (18) with the axial butt of axle sleeve (15).
6. The high performance brushless electric machine of claim 5, wherein: the distance between the first step surface (17) and the rear end of the rotor shaft (6) is smaller than the axial length of the shaft sleeve (15).
7. The high performance brushless electric machine of claim 5, wherein: and a fourth convex step surface (19) which is abutted against the outer end of the induction magnetic ring (16) is formed on one side of the axial outer end of the shaft sleeve (15).
8. The high performance brushless electric machine of claim 5, wherein: the rear end cover (3) outer end is fixed with and is located hall plate (20) outside induction magnetic ring (16), be equipped with between stator winding (9) and hall plate (20) and supply the wire hole (21) that the lead wire of stator winding (9) passed so that the lead wire of stator winding (9) with hall plate (20) link to each other, wire hole (21) follow the tank bottom of spread groove (13) extends to the outer end of rear end cover (3), the quantity of wire hole (21) is three and is circular array distribution.
9. The high performance brushless electric machine of claim 2 or 3, wherein: the front end cover (2) and the rear end cover (3) are internally and respectively fixed with a bearing (22) for rotatably supporting the rotor shaft (6), the front end and the rear end of the rotor shaft (6) respectively penetrate through the corresponding inner holes of the bearing (22) and form a fixed connection with the inner holes, the bearing (22) in the rear end cover (3) is positioned on one side of the outer end of the bearing and is positioned on the outer side of the connecting sleeve (12), the rotor shaft (6) is provided with a second step surface (23) which is abutted against and recessed at the axial inner end of the bearing (22) in the front end cover (2), the rotor shaft (6) is further provided with a third step surface (24) which is positioned on the axial inner side of the bearing (22) in the rear end cover (3) and is recessed, the rotor shaft (6) is sleeved with a spring (25) which is positioned between the third step surface (24) and the bearing (22) in the rear end cover (3), and two ends of the spring (25) are respectively abutted with the third step surface (24) and the axial inner end of the bearing (22).
10. The high performance brushless electric machine of claim 1, 2 or 3, wherein: and two balance blocks (26) which are respectively positioned at two axial sides of the magnetic steel (7) are fixed on the rotor shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098705.6A CN114552839B (en) | 2022-01-27 | 2022-01-27 | High-performance brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098705.6A CN114552839B (en) | 2022-01-27 | 2022-01-27 | High-performance brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114552839A true CN114552839A (en) | 2022-05-27 |
| CN114552839B CN114552839B (en) | 2024-04-19 |
Family
ID=81673222
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| Application Number | Title | Priority Date | Filing Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114844265A (en) * | 2022-07-05 | 2022-08-02 | 合力（天津）能源科技股份有限公司 | Novel petroleum underground high-temperature-resistant micro motor structure |
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| CN114552839B (en) | 2024-04-19 |
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